Search results for " loops"

showing 2 items of 42 documents

The advanced Virgo longitudinal control system for the O2 observing run

2020

Following a successful period of data-taking between 2006 and 2011, the Virgo gravitational-wave detector was taken offline for a major upgrade. The changes made to the instrument significantly increased the complexity of the control systems and meant that an extended period of commissioning was required to reach a sensitivity appropriate for science data-taking. This commissioning period was completed in July of 2017 and the second-generation Advanced Virgo detector went on to join the Advanced LIGO detectors in the O2 science run in August of the same year. The upgraded detector was approximately twice as sensitive to binary neutron star mergers as the first-generation instrument. During …

neutron star: binaryPhysics::Instrumentation and DetectorsAstronomycavity: opticalSuspended optical cavities01 natural sciencesGravitational wave detectorsoff-lineGravitational wave detectors; Interferometer; Suspended optical cavities; Control loopsControl loopSuspended optical cavitieLIGOInterferometer010303 astronomy & astrophysicsdetectorsSettore FIS/01Physics[PHYS]Physics [physics]DetectorAstrophysics::Instrumentation and Methods for AstrophysicsGravitational wave detectors Interferometer Suspended optical cavities Control loopsGravitational wave detectorUpgrade[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]upgradecontrol systemGravitational wavelongitudinalAstrophysics::High Energy Astrophysical PhenomenainterferometerAstrophysics::Cosmology and Extragalactic Astrophysicscontrol loops; gravitational wave detectors; interferometer; suspended optical cavitiesgravitational radiation: direct detectionGeneral Relativity and Quantum CosmologySettore FIS/05 - Astronomia e AstrofisicaBinary black holebinary: coalescence0103 physical sciencesControl loops[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]010308 nuclear & particles physicsGravitational wavegravitational radiationAstronomyAstronomy and AstrophysicssensitivityLIGOgravitational radiation detectordetector: sensitivityNeutron star* Automatic Keywords *VIRGOblack hole: binaryControl systemgravitational radiation: emission[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
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О проблеме Гарднера для систем управления фазовой автоподстройкой частоты

2019

This report shows the possibilities of solving the Gardner problem of determining the lock-in range for multidimensional phase-locked loops systems. The development of analogs of classical stability criteria for the cylindrical phase space made it possible to obtain analytical estimates of the lock-in range for third-order system. peerReviewed

säätöteoriaphase-locked loopselektroniset piiritnonlinear analysisGardner problem on the lock-in rangefrequency stability criteria
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